Numbers of primordial follicles and growing follicles per ovary pairs among proestrous, estrous, metestrous and diestrous were not significantly different(P>0.05).

• 每对卵巢中原始卵泡数和生长卵泡数在发情前期、发情期、发情后期和发情间期之间差异不显著（P＞0.；05）；